Tube holder



FIG. 1 is a perspective view of a tube holder, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left-side elevational view thereof, the right-sideelevational view being a mirror image thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines showing a person and a retaining strap in the figuresdepict environmental matter and form no part of the claimed design.

CLAIM I claim the ornamental design for a tube holder, as shown anddescribed.